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  • mso/eml/heat_exchangers/HEX_Engine.mso

    r45 r68  
    3838*               Basic_Pdrop     : Hot and Cold Side Pressure Drop
    3939*----------------------------------------------------------------------
     40*       - Main_DoublePipe : Double Pipe Heat Exchanger Block
     41*               DoublePipe_HeatTransfer
     42*               DoublePipe_PressureDrop
     43*----------------------------------------------------------------------
    4044* Author: Gerson Balbueno Bicca
    4145* $Id$
     
    277281Cold    as Basic_Pdrop;# Cold Stream
    278282end     
     283
     284Model DoublePipe_HeatTransfer
     285#=====================================================================
     286#       Heat Transfer
     287#===================================================================== 
     288PARAMETERS
     289As              as area                         (Brief="Cross Sectional Area for Flow",Default=0.05,Lower=1e-8);
     290Dh      as length                       (Brief="Hydraulic Diameter of Pipe for Heat Transfer",Lower=1e-8);
     291
     292VARIABLES
     293Re              as positive                     (Brief="Reynolds Number",Default=100,Lower=1);
     294hcoeff  as heat_trans_coeff (Brief="Film Coefficient",Default=1,Lower=1e-12, Upper=1e6);
     295PR              as positive                     (Brief="Prandtl Number",Default=0.5,Lower=1e-8);
     296Phi     as positive                     (Brief="Phi Correction",Default=1,Lower=1e-3);
     297Vmean   as velocity                     (Brief="Tube Velocity",Lower=1e-8);
     298end
     299
     300Model DoublePipe_PressureDrop
     301#=====================================================================
     302#       Pressure Drop
     303#===================================================================== 
     304PARAMETERS
     305Dh      as length               (Brief="Hydraulic Diameter of Pipe for Pressure Drop",Lower=1e-6);
     306
     307VARIABLES
     308Pdrop   as press_delta  (Brief="Pressure Drop",Default=0.01, Lower=1e-10);
     309fi      as fricfactor   (Brief="Friction Factor", Default=0.05, Lower=1e-10, Upper=2000);
     310Re              as positive             (Brief="Reynolds Number",Default=100,Lower=1);
     311end     
     312
     313Model Main_DoublePipe
     314VARIABLES
     315HeatTransfer as DoublePipe_HeatTransfer;
     316PressureDrop as DoublePipe_PressureDrop;
     317end
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